Bottles and jars – Closures – Cap type
Patent
1975-06-30
1976-11-30
Hart, Ro E.
Bottles and jars
Closures
Cap type
B65D 4130
Patent
active
039944107
ABSTRACT:
An elastically deformable plastic cap for containers such as bottles having necks, such containers containing materials under pressure, such as aerated liquids. The cap consists of two cylinders disposed concentrically one within the other. The outer cylinder has a sealing ring with a sealing edge at its lower end and the inner cylinder is closed at its bottom end with a diaphragm. The cylinders are connected at their upper ends by means of a ring. The bottom surface of the diaphragm and the bottom surface of the sealing ring are disposed in a first common plane; the sealing edges on the inner surface of the sealing ring and the outer surface of the inner cylinder respectively and the upper surface of the diaphragm lying in a second common plane, the second plane being parallel and above the first common plane. Preferably the inner side wall of the inner cylinder is provided with an annular step, and the inner part of the inner cylinder above the diaphragm and the outer part of the inner cylinder in the plane of the diaphragm are bevelled in the same direction to provide an outwardly and upwardly expanding frusto-conical portion connecting the lower end of the inner cylinder with the outer edge of the diaphragm.
REFERENCES:
patent: 2768762 (1956-10-01), Guinet
patent: 3556338 (1971-01-01), Wilkinson
patent: 3722729 (1973-03-01), Yamada
patent: 3825144 (1974-07-01), Wiedmer
patent: 3858742 (1975-01-01), Grussen
Penkin Dimiter Yordanov
Pirgov Yordan Vassilev
Pirgova Margarita Ilieva
Hart Ro E.
So Besalkoholni Na Pitki I Mineralni Vodi
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